SEGMENT AND GEOGRAPHIC DATA Geographic Data Reporting (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Segment Reporting Information [Line Items]
Revenue	$ 16,187	$ 16,215
Net assets	34,839	43,978
United Kingdom
Segment Reporting Information [Line Items]
Revenue	4,011	3,533
Net assets	2,645	2,802
Australia
Segment Reporting Information [Line Items]
Revenue	6,768	7,639
Net assets	3,148	2,909
United States
Segment Reporting Information [Line Items]
Revenue	2,851	3,535
Net assets	24,176	35,365
Other
Segment Reporting Information [Line Items]
Revenue	2,557	1,508
Net assets	$ 4,870	$ 2,902